C38 – Malignant neoplasm of heart, mediastinum and pleura
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of respiratory and intrathoracic organs
ICD-10-CM code
C38
- Code
C38(claims format:C38)- Description
- Malignant neoplasm of heart, mediastinum and pleura
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C30-C39 Malignant neoplasms of respiratory and intrathoracic organs
Billable codes under C38
C38 is a header code and cannot be used on claims. Choose the most specific code:
- C38.0 – Malignant neoplasm of heartBillable
- C38.1 – Malignant neoplasm of anterior mediastinumBillable
- C38.2 – Malignant neoplasm of posterior mediastinumBillable
- C38.3 – Malignant neoplasm of mediastinum, part unspecifiedBillable
- C38.4 – Malignant neoplasm of pleuraBillable
- C38.8 – Malignant neoplasm of overlapping sites of heart, mediastinum and pleuraBillable
Notes for C38
Excludes1 (not coded here):
- mesothelioma (C45.-)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block C30-C39
Includes:
- malignant neoplasm of middle ear
Excludes1 (not coded here):
- mesothelioma (C45.-)
Frequently asked questions
What is ICD-10 code C38?
C38 is the ICD-10-CM code for malignant neoplasm of heart, mediastinum and pleura, in the block C30-C39 (Malignant neoplasms of respiratory and intrathoracic organs).
Is C38 a billable code?
No. C38 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.